Abstract:
RC5 and RC6 block ciphers are standard
cryptographic Encryption Algorithm for Digital Images. RC5
and RC6 block cipher can be considered to be a real-time
secure symmetric encryption for digital images. Experiments are
made to test the security of RC5 and RC6 block ciphers for
digital images against all types of security attacks. Experiments
and results verify and prove that RC5 and RC6 block cipher is
highly secure for real-time image encryption from cryptographic
viewpoint. RC5 and RC6 block cipher is investigated among its
several design parameters such as word size, number of rounds
and secret key length and the optimal choices for the best values
of such design parameters are given. Encryption is the most
trusted practical security technique fir digital data in computer
and communication systems.
